SCF Reference Manual for the Storage Subsystem (G06.27+, H06.04+)

Storage Subsystem Commands

SCF Reference Manual for the Storage Subsystem—529937-008

14-22

Disk Attribute Descriptions

MIRRORLOCATION ( group, module, slot )

for internal disks, is the location of the mirror half of the disk volume.

For 45xx, ESS, and M8xxx disks, is the location of the adapter that controls the

mirror path to the disk.

This attribute is optional if MIRRORSAC (page 14-23) is given in name format but

required if given in number format.

MIRRORLOCATION can be altered when all paths to the volume are in the

STOPPED state.

MIRRORLOCATION can also be altered when all configured paths to the primary

drive are in STARTED state and MIRRORLOCATION is not yet configured. The

result of an online reconfiguration must be symmetrical. If the volume has a

BACKUP path, it must also have a MBACKUP path.

You cannot change the value of this attribute by using the ALTER command online

after setting it (using either the ADD or ALTER command). To change the value

online, you must delete, respecify the mirror location.

MIRRORLUN number

specifies the logical unit number (LUN) on the Enterprise Storage System.

The ESS administrator must give you the LUN so that you can specify it in this

attribute.

The default value for MIRRORLUN is 0.

MIRRORPORTNAME number

specifies the Fibre Channel port name (WWN) used by the path to a mirror disk

volume on an Enterprise Storage System (ESS).

The ESS administrator must give you the WWN so to specify it in this attribute.

Enter number as a 16 character hexadecimal number, without a leading %H.

ON Enables automatic configuration as half of a mirrored disk. A disk in an

odd-numbered slot is assigned the next-higher slot number for its mirror;

a disk in an even-numbered slot is assigned the next-lower slot number

for its mirror. (Default)

OFF Disables automatic mirroring.

Note. This attribute is not valid for the PROFILE object.